ASTROSAT CZTI

Data Quality Report

Orbit 44230

Creation date: 2024-06-27T23:00:46.223201
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_071T06_9000005972_44230cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44230cztM0_level2_quad_clean.evt
Size (bytes)610,024,320105,223,680
Size581.8 MB 100.3 MB
Events in quadrant A10,167,976538,342
Events in quadrant B4,437,698748,292
Events in quadrant C3,409,381744,460
Events in quadrant D4,036,597679,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351552
B0178552
C0150982
D0169152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6824220632.327081%
B68243975.817702%
C68241041.524033%
D68241502.198124%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7704 6825 1970 1970 25.57% 28.86%
B 7704 6825 187 187 2.43% 2.74%
C 7704 6825 63 63 0.82% 0.92%
D 7704 6825 100 100 1.30% 1.47%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 6101883 43746.15 674 661 139.5
A 10 83 1415845 10146.96 674 661 139.5
A 2 79 20454 141.92 674 661 139.5
B 0 200 519489 3526.45 753 730 147.1
B 5 172 286315 1941.37 753 730 147.1
B 0 219 184040 1246.12 753 730 147.1
C 14 254 349646 1954.53 755 760 178.5
C 2 14 46864 258.28 755 760 178.5
C 3 233 30971 169.25 755 760 178.5
D 13 249 442172 2348.78 748 726 187.9
D 5 222 213156 1130.27 748 726 187.9
D 1 52 165709 877.82 748 726 187.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter